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Warrants (Tables)
3 Months Ended
Oct. 31, 2019
Warrants Abstract  
Schedule of warrant activities

A summary of the Company’s warrant activities is as follows:

 

   Number of Warrants  Weighted Average Exercise Price per Share  Weighted Average Remaining Life (Years)  Aggregate Intrinsic Value
Outstanding - July 31, 2019   15,399,681   $2.53    0.40   $4,500,000 
Issued   62,857    3.50    5.01    —   
Forfeited   (57,143)   3.50    —      —   
Outstanding - October 31, 2019   15,405,395   $2.52    0.18   $—